PBD 3517/1
PB2
PB1
1
2
3
4
5
6
7
8
16 VCC
15 VSS
14 LB
PB2
PB1
1
2
3
4
5
6
7
8
16 VCC
15 VSS
14 LB
GND
GND
PBD
3517/1SO
PBD
3517/1N
P
A1
13 LA
P
A1
13 LA
P
12 RC
11 INH
10 HSM
A2
P
12 RC
11 INH
10 HSM
A2
DIR
STEP
ØB
DIR
STEP
ØB
9
ØA
9
ØA
Figure 13. Pin configuration.
Pin Description
DIP
SO-pack.
Symbol Description
1
1
2
PB2
Phase output 2, phase B. Open collector output capable of sinking max 500 mA.
Phase output 1, phase B. Open collector output capable of sinking max 500 mA.
Ground and negative supply for both VCC and VSS.
2
PB1
3
3
GND
PA1
4
4
Phase output 1, phase A.
5
5
PA2
Phase output 2, phase A.
6
6
DIR
Direction input. Determines in which rotational direction steps will be taken.
7
7
STEP Stepping pulse. One step is generated for each negative edge of the step signal.
8
8
ØB
Zero current half step position indication output for phase B.
Zero current half step position indication output for phase A.
Half-step mode. Determines whether the motor will be operated in half or full-step
mot. When pulled low, one step pulse will correspond to a half step of the motor.
A high level on the inhibit input turns all phase output off.
Bilevel pulse timing pin. Pulse time is approximately ton = 0.55 • RT • CT
Second level (bilevel) output, phase A.
9
9
ØA
10
10
HSM
11
12
13
14
15
16
11
12
13
14
15
16
INH
RC
LA
LB
Second level (bilevel) output, Phase B.
VSS
VCC
Second level supply voltage, +10 to +40 V.
Logic supply voltage, nominally +5 V.
5
ERICSSON [ ERICSSON ]
